YPM 63-16, Crooked Creek (Cretaceous to of the United States)

Where: Big Horn County, Wyoming (45.0° N, 108.3° W: paleocoordinates 44.3° N, 66.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Himes Member (Cloverly Formation), Middle Albian to Middle Albian (109.0 - 93.5 Ma)

• lower part of member = Ostrom's unit VI; 1-3 ft below Unit VII

•D'Emic et al. 2019: In the mid–late Albian to early Cenomanian (ca. 109–98 Ma), sediment sourced from the east was deposited as the Himes Member and Greybull Sandstone.

• bed-level stratigraphic resolution

Environment/lithology: "channel"; coarse-grained, yellow sandstone

Size class: macrofossils

Collected by J. Ostrom in 1963; reposited in the YPM

Collection methods: quarrying, mechanical,

Primary reference: J. H. Ostrom. 1970. Stratigraphy and paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin area, Wyoming and Montana. Peabody Museum Bulletin 35:1-234 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50499: authorized by Matthew Carrano, entered by Matthew Carrano on 16.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Nodosauridae
? Sauropelta sp., "Sauropelta edwardsi" = Sauropelta edwardsorum
? Sauropelta sp. Ostrom 1970 ankylosaur
"Sauropelta edwardsi" = Sauropelta edwardsorum Ostrom 1970 ankylosaur
 Theropoda -
 Theropoda - Ornithomimidae
Ornithomimidae indet.2 Marsh 1890 ornithomimid
 Saurischia -
 Loricata -
Crocodylia indet. crocodilian
YPM 5401, metatarsal;
Mesosuchia indet.1 Huxley 1875 crocodilian
YPM 5444, tooth